In paragraph 6 the classes of plant varieties prescribed for the purposes of section 5(7) of the Act (which enables classes of plant varieties to be prescribed in connection with the use of names likely to deceive or cause confusion) shall be varied as follows:
(a) after sub–paragraph (i) there shall be added the following sub–paragraph—
(ia) in relation to plant varieties of leeks of all plant varieties of the species specified in Part IA of Schedule 3 to this Scheme;
(b) after sub–paragraph (ii) there shall be added the following sub–paragraph—
(iia) in relation to plant varieties of Brassica carinata of all plant varieties of the species specified in Part IIA of Schedule 3 to this Scheme;